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0. F. MAYER. TYPE WRITING MAGHINE. No. 565,482. Patented Aug. 11, 1896.

\"PJ\ l 1 i. 9 Wwf i I ik i UNITED STATES PATENT FFICE.

OTTO FRIEDRICH MAYER, OF BERLIN, GERMANY, ASSIGNOR TO O. F. KINDERMANN8o CO., OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 565,482, dated August11, 1896.

Application led November 15,1895. Serial No. 569,123. (No model.)Patented in Germany March 15, 1895, No. 12,709; in England .Tune 29,1895, No. 12,587, and in Belgium .Tuly 29,1895,No.116,740.

T0 @ZZ whom it may concern.:

Be it known that LOTTO FRIEDRICH MAYER, a subject of the King ofPrussia, Emperor of Germany,residing at Oharlottenstrasse 4:,Berlin, inthe Kingdom of Prussia, Germany, have invented new and usefulImprovements in Type-Writing Machines, (for which 'I have obtainedGerman patent, No. 12,709, dated March 15, 1895; British patent, No.12,587, dated J une 29, 1895, and Belgian patent, No. 116,740, datedJuly 29, 1895,) of which the following is a specification.

This invention has for its object an improved type-Writing machinehaving an elastic type-plate.

In the accompanying drawings, Figure l is a plan view. Fig. 2 is a frontview with the carriage raised. Fig. 3 is a vertical section viewed inthe direction of arrow oo of Fig. 1. Fig. 4 is a vertical section viewedin the direction of arrow 'y of Fig. 1. Figs. 5 and G show a plan viewand side view, respectively, of the adjusting-lever carrying the elastictype-plate. Figs. 7 and 8 show, on enlarged scale, the mechanismoperating the'impression-hammer. Fig. 9 is a section in line o 'U ofFig. 7 and showing the left-hand part of this latter. Fig. 10 is asection in line w w of Fig. 7 and showing the right-hand part of thesame. Fig. 11 is an upper view of the device for feeding the carriage,and Fig. 12 shows the same parts in another position.

The arrangement of the machine is essentially as follows: A carriage cis adjustably arranged on a spindle b in supports a. A pawl e engages ina xed rack-bar d, said pawl being movably arranged on a short leverf,which in turn is firmly connected with a spindle g, mounted on thestrengthened rear part c of the carriage c. A spiral spring h, Fig. f1,presses in such a way on the pivot of the pawl e that the double hingeformed by this pawl and the lever f always assumes the position shown inFigs. 1 and 2. A bar o oscillates the spindle b and by means of a key olmay be pressed against the double hinge c fin such a Way that the latteris eX- panded. As by this means the pawl e engages in the rack-bar d,the carriage c must be moved to the right, the movement being soregulated as to be always to the extent of the width of a tooth, that isto say, the width of a letter.

By the opening or expansion of the double hinge c f the spindle g isturnedand with it the lever i, mounted on "the upper end of this spindleg. The lever i thereby presses forward, against the action of a springZ, a bar k, adjustably arranged under the carriage c. The bar 7c has onits front end m, which has the form of a plate, a wedge-piece m', which,on the bar k being moved forward, en gages with a wedge-surface n of theimpression-hammer n, which latter rocks on the spindle b. By this meansthe impressionhammer n is pressed down and brings the required type ofthe elastic type-plate r' onto the paper which lies beneath it.- IVhenthe wedge-surface m has passed completely orf the wedge-surface n of thehammer n, the latter is thrown upward by the elasticity of the typeplater', so that the wedge-surface m on its return movement slips away underthe wedge-surface n without exerting any pressure onthe same.` By thisarrangement an equally strong impression is obtained on the paper, itbeing immaterial whether the operator presses heavily or lightly on thekey o.

The distance between the plate m and the under side of the carriage c isregulated by means of a screw p. By turning this screw p to the right orleft the pressure of the wedgesurface m on the wedge-surface n? may beregulated at will and thereby the strength of the impression which is tobe produced on the paper.

The typeplate r is carried by'a frame fr, which is made in one piecewith the lever t, by which the type-plate is adjusted to the desiredletters. The rear end of the frame r is connected with a circularguide-disk s, Fig. 5, which moves freely in a straight guide u, arrangedon the under side of the transportcarriage c. This arrangement of makingthe frame r of the type-plate r in one piece with the lever t and theguide-disk s renders it possible to easily replace the type-platebyanother having another pattern of type. In

order to effect this change of type-plate, it is IOO 2 BAB merelynecessary to remove the inkingplate' Vhat I claim as my invention, anddesire to secure by Letters Patent, is-

l. In a typewriting machine having a earriage adapted to be laterallydisplaced, the combination with a lever f secured to the rear part ofsaid carriage, and With a pawl e attached to said lever, of a iixed rackd arranged to cooperate with said pawl, and a bar 0 parallel to the rackadapted to be moved against and from said rack, and arranged to aet uponthe said lever and the said pawl, for the purpose as described.

2. In a type-Writing machine having a carriage adapted to be laterallydisplaced, an elastic type-plate held by said carriage, and ahammeradapted to act upon said type-plate, the combination with a shaft garranged in the rear part of said carriage, a lever f secured to one endof said shaft, a pawl c at taehed to said lever, a fixed rack clarranged to cooperate With said pawl, a bar 0 parallel to the rackadapted to be moved against and from said rack and arranged to act uponthe said lever and the said paWl, of a lever t' secured to the other endof said shaft, and means for transferring the oscillations of said lever1I upon said hammer as set forth.

3. In a type-Writing machine having a carriage adapted to be laterallydisplaced, an elastic type-plate held by said carriage, and ahammeradapted to act upon said type-plate,

the combination with a shaft g arranged in the rear part of saidcarriage, a lever t' se-l cured to one end of said shaft, and a rod 7aarranged in guides secured to the said carriage, and adapted to bedisplaced by said le ver, of a Wedge m fixed to said rod, a Wedge nfixed to said hammer, and adapted to be operated by said former Wedgeand means for turning the said shaft simultaneously With feeding thecarriage, substantially and for the purpose as described.

Il. In a type-writing machine having a horizontal spindle, a carriageadapted to be displaced upon said spindle, an elastic type-plate held bysaid carriage, and a hammer adapted to act upon said type-plate, thecombination with a shaft g arranged in the rear part of the saidcarriage, a lever f secured to the lower end of said shaft, a pawl eattached to said lever, a fixed rack d arranged parallelly to the saidspindle below this latter, and adapted to cooperate with said pawl a baro suspended from the spindle b, and adapted to be moved against and fromsaid rack so as to cause the cooperation of the said lever and the saidpawl with the said rack, of a lever t' secured to the upper end of theshaft g, a rod 7s arranged in guides secured to the carriage, andadapted to be displaced by said lever fi, a Wedge m fixed to said rod,and a Wedge a fixed to said hammer, and adapted to be operated by saidWedge m; the latter being adapted to depress the said hammer, and thetype-plate being adapted to raise the hammer, substantially asdescribed.

o'rTo FRIEDRICH MAYER.

XVitnesses W. HAUPT, CHARLES H. DAY.

